Greek pita with spiced lamb

Spiced lamb, kasseri and feta cheeses, mint, and some fresh veg for crunch - all sandwiched between fluffy Greek pita. I entered this in a grilled cheese recipe contest recently and found out today that I didn’t win... but don’t let that deter you - it’s one delicious sandwich!!!

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#RECIPE
½ lb ground lamb
½ small red onion, finely chopped
1 clove garlic, finely chopped
Salt and pepper to taste
1 tsp ground allspice
1/2 tsp sumac
1 pinch red pepper flakes
2 tsp tomato paste
1 tablespoon water
2 Greek pita breads
2 teaspoons olive oil
4 slices kasseri cheese
½ cup crumbled feta
2 romaine lettuce leaves, finely shredded
1 tomato, seeded and chopped
½ red onion, thinly sliced
1 tbsp chopped fresh mint
Heat a frying pan over medium high heat. Add lamb, onion, garlic, salt and pepper and cook, stirring frequently, until lamb is browned. Drain excess grease from pan, then add allspice, sumac and red pepper flakes. Cook and stir for 1 minute, then add tomato paste and water. Cook a further 2 to 3 minutes, then remove from heat and set aside.
Brush one side of each pita with olive oil. Lay one pita, oiled side-down, on a flat work surface. Cover with kasseri slices. Spoon lamb mixture evenly over top, then sprinkle over the crumbled feta cheese. Top with remaining pita, oiled side-up.
Transfer to a preheated panini press. Cook until cheese is melted and pita is browned on both sides.
Remove grilled cheese from press to a cutting board with the feta-topped side facing up. Gently lift top pita and sprinkle with romaine, tomato, red onion, and mint. Replace top pita and cut in half to serve.